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首页> 外文期刊>RSC Advances >Phenyl carbamate functionalized zinc oxide nanorods for paper-based thin film microextraction
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Phenyl carbamate functionalized zinc oxide nanorods for paper-based thin film microextraction

机译：苯基氨基甲酸酯官能化的氧化锌纳米棒，用于纸基薄膜微萃取

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In this work, phenyl carbamate functionalized zinc oxide nanorods were fabricated on a cellulose filter paper and employed as a novel and low cost sorbent in a thin film microextraction (TFME) technique. The modified cellulose paper was applied for the extraction of three phenylurea herbicides from different water samples. Liquid chromatography with diode array UV-vis detection was used for analyte detection. Characterization of the fabricated paper-based TFME sorbent was performed by scanning electron microscopy and elemental analysis. The effect of significant experimental parameters in the TFME technique including type and volume of desorption solvent, desorption time, shaking rate for extraction and desorption, salt addition and extraction time were studied and optimized. The extraction capability of phenyl carbamate functionalized zinc oxide paper was also compared with the unmodified paper and papers modified with ZnO and phenyl isocyanate. The linear range of the method for neburon, monuron and linuron was in the range of 0.2–20, 0.5–50 and 0.2–20 μg L?1, respectively. The detection limits were 0.04, 0.05 and 0.13 μg L?1 for neburon, linuron and monuron, respectively. The precision of the method was less than 6.8% for all analytes. Film-to-film reproducibility varied between 8.1 and 10.8% (relative standard deviation). The method was validated for the determination of analytes in real water samples. Recoveries between 92 and 106% were achieved.
机译：在这项工作中，氨基甲酸苯酯官能化的氧化锌纳米棒在纤维素滤纸上制备，并用作薄膜微萃取（TFME）技术中的新型低成本吸附剂。改性纤维素纸用于从不同水样中提取三种苯脲类除草剂。具有二极管阵列紫外可见检测的液相色谱法用于分析物检测。通过扫描电子显微镜和元素分析对制成的纸基TFME吸附剂进行表征。研究并优化了TFME技术中重要实验参数的影响，包括脱附溶剂的类型和体积，脱附时间，萃取和脱附的振荡速率，盐的添加和萃取时间。还比较了氨基甲酸苯酯官能化的氧化锌纸与未改性纸和经ZnO和异氰酸苯酯改性的纸的萃取能力。牛small，门罗隆和亚麻嘧啶的线性范围分别为0.2-20、0.5-50和0.2-20μgL ？1 。对neburon，linuron和monuron的检出限分别为0.04、0.05和0.13μgL ？1 。所有分析物的方法精度均低于6.8％。胶片间的再现性在8.1至10.8％（相对标准偏差）之间变化。该方法经验证可用于测定真实水样中的分析物。回收率在92％至106％之间。

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